104 lines
2.7 KiB
Bash
Executable File
104 lines
2.7 KiB
Bash
Executable File
#!/bin/bash
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# Java 环境配置脚本
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echo "🔧 配置Java 21运行环境..."
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# 1. 检查当前Java版本
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echo "当前Java版本:"
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java -version
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# 2. 检查可用的Java版本
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echo -e "\n可用的Java版本:"
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if command -v /usr/libexec/java_home &> /dev/null; then
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/usr/libexec/java_home -V
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fi
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# 3. 查找JDK 21
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echo -e "\n查找JDK 21..."
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JDK21_HOME=""
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# 检查常见路径
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COMMON_PATHS=(
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"/usr/lib/jvm/java-21-openjdk"
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"/usr/lib/jvm/java-21-oracle"
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"/Library/Java/JavaVirtualMachines/openjdk-21.jdk/Contents/Home"
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"/Library/Java/JavaVirtualMachines/jdk-21.jdk/Contents/Home"
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"/opt/homebrew/opt/openjdk@21"
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"$HOME/.sdkman/candidates/java/21.0.1-open"
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"$HOME/.sdkman/candidates/java/21.0.2-open"
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"$HOME/.sdkman/candidates/java/21.0.3-open"
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)
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for path in "${COMMON_PATHS[@]}"; do
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if [ -d "$path" ]; then
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echo "✅ 找到JDK 21: $path"
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JDK21_HOME="$path"
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break
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fi
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done
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# 使用java_home工具查找（macOS）
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if [ -z "$JDK21_HOME" ] && command -v /usr/libexec/java_home &> /dev/null; then
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if JDK21_HOME=$(/usr/libexec/java_home -v 21 2>/dev/null); then
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echo "✅ 通过java_home找到JDK 21: $JDK21_HOME"
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fi
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fi
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if [ -z "$JDK21_HOME" ]; then
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echo "❌ 未找到JDK 21，请安装JDK 21"
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echo ""
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echo "📥 安装方法:"
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echo "1. 使用Homebrew (macOS):"
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echo " brew install openjdk@21"
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echo ""
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echo "2. 使用SDKMAN:"
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echo " sdk install java 21.0.3-open"
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echo ""
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echo "3. 从Oracle官网下载:"
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echo " https://www.oracle.com/java/technologies/downloads/#java21"
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echo ""
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exit 1
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fi
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# 4. 设置环境变量
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echo -e "\n🔧 设置环境变量..."
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export JAVA_HOME="$JDK21_HOME"
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export PATH="$JAVA_HOME/bin:$PATH"
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# 5. 验证设置
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echo -e "\n✅ 验证Java 21设置:"
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echo "JAVA_HOME: $JAVA_HOME"
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java -version
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# 6. 生成环境配置文件
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echo -e "\n📝 生成环境配置文件..."
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# 创建.java-version文件（jenv用）
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echo "21" > .java-version
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# 创建shell配置脚本
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cat > setjava21.sh << 'EOF'
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#!/bin/bash
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# Java 21 环境配置脚本
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export JAVA_HOME="$JDK21_HOME"
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export PATH="$JAVA_HOME/bin:$PATH"
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echo "✅ Java 21 环境已配置"
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echo "JAVA_HOME: $JAVA_HOME"
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java -version
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EOF
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# 替换占位符
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sed -i.bak "s|\$JDK21_HOME|$JDK21_HOME|g" setjava21.sh
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rm setjava21.sh.bak
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chmod +x setjava21.sh
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echo "✅ 创建了 setjava21.sh 脚本"
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echo ""
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echo "🚀 使用方法:"
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echo "1. 在当前shell中运行: source ./setjava21.sh"
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echo "2. 或者在每次新的shell中运行: export JAVA_HOME='$JDK21_HOME' && export PATH=\"\$JAVA_HOME/bin:\$PATH\""
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echo ""
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echo "📝 永久配置（添加到 ~/.zshrc 或 ~/.bashrc）:"
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echo "export JAVA_HOME='$JDK21_HOME'"
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echo "export PATH=\"\$JAVA_HOME/bin:\$PATH\"" |